A person you have befriended via electronic communications, most commonly email but can include MMORPGs, MPOGs, Web Blogs, mail lists or Instant Message systems.
I got this cool link from an e.quaintence I know from Fark.com
by Dr. Johnson January 12, 2004
Typically a 'friend' within a website or online setting exclusively; which ironically don't allow for the depth of interaction, rapport and social connection that friends of a conventional nature share.
Her friends offered to drive her to her doctor's appointment; while her e-quaintance's weren't even aware she was ill.
by B M Crowe January 15, 2007